Mason&#39;s level



FIG. 1 is a front perspective view of a mason's level including a main body, a central horizontal bubble vial housing, a vertical bubble vial housing, a left end cap, and a right end cap;

FIG. 2 is a front elevation view of the mason's level of FIG. 1;

FIG. 3 is a left elevation view of the mason's level of FIG. 1;

FIG. 4 is a top plan view of the mason's level of FIG. 1;

FIG. 5 is a bottom plan view of the mason's level of FIG. 1;

FIG. 6 is a rear elevation view of the mason's level of FIG. 1; and,

FIG. 7 is right elevation view of the mason's level of FIG. 1.

The broken lines along the main body of the spirit level in FIGS. 1, 2, 4, 5 and 6 indicate that the lengths between the horizontal bubble vial housing and the left end cap, the horizontal bubble vial housing and the vertical bubble vial housing, and the vertical bubble vial housing and the right end cap can vary from the lengths shown in FIG. 1 according to the overall length of the spirit level; the broken lines form no part of the claimed design. 

The ornamental design for a mason's level, substantially as shown and described. 